Function normalizeTexture

script.js:309–323

(texture, width, height)

}

function normalizeTexture (texture, width, height) {
    let result = new Uint8Array(texture.length);
    let id = 0;
    for (let i = height - 1; i >= 0; i--) {
        for (let j = 0; j < width; j++) {
            let nid = i * width * 4 + j * 4;
            result[nid + 0] = clamp01(texture[id + 0]) * 255;
            result[nid + 1] = clamp01(texture[id + 1]) * 255;
            result[nid + 2] = clamp01(texture[id + 2]) * 255;
            result[nid + 3] = clamp01(texture[id + 3]) * 255;
            id += 4;
        }
    }
    return result;
}

function clamp01 (input) {
    return Math.min(Math.max(input, 0), 1);